Do you think cannabis is more prone to mold and fungal diseases because of where it originates in very dry climates? Then again, what about Columbia. Isn't it humid down there? I just get confused as to why cannabis is somehow different from every other plant on earth when it comes to how to grow it. So many things that don't ordinarily apply to horticulture or practices are used in growing cannabis, vice versa.
I definitely trust what you say and will be mindful of that, but I'm not sure I understand how it happens.
For one, in my opinion, the water pressure from the jet function on a hose is far too high to be blasting away on my delicate foliage, this may work for hardy broccoli (which I do blast the bugs away on), but not so good for the delicate foliage of cannabis.
I'm referring to the actual recommendation that you gave Joedaddy about his large and bushy plant.
Consider his plant. It's a big and bushy specimen, and he is in fact a coastal grower.
With the right conditions, mold will take advantage of such a vigorous host. The combination of repeated "routine leaf blastings" with hot,humid, and stagnate air inside the foliage pocket can definitely promote fungus growth. The last thing an individual wants is to assume everything is great and the wake up the following week to a massive fungus issue that went completely unseen because the excess water in combination with the weather that accelerated the growth. Now, I hope you wouldn't think about doing this in mid flower because that would definitely spell disaster for us ocean growers.
Personally, with how much mold I have dealt with while growing cannabis, I try everything in my power to avoid promoting any kind of mold growth on or near my plants.
Everyone has their own method and techniques that they figure out, so one persons golden advice could be another persons disaster. Only the person growing their plant will learn through trial and error (having to destroy/trash entire plants because of stem mold - which I've had to do), and eventually figure out a way to achieve a successful harvest by however means necessary. Even if that means tediously going through the foliage by hand and inspecting each square inch and removing the bugs one by one.
The strain makes a big difference, bring a real dense and bushy indica out here on the ocean and use the same techniques an inland grower does, they'll see mold for sure.
Bring a Sativa from the Amazon jungle that grows more lanky and has less pockets of foliage to trap moisture, more airflow to the canopy, and the buds while not super compact are slightly "open" so that there is less chances of bud rot and it will be a more successful growing crop (like my KC-45)